Samsung and AT&T have just announced the Focus S, the successor to one of their first Windows Phone 7 based phone, the Focus.

The Focus S continues the trend of manufacturers releasing a mildly updated version of a handset, and naming it xxx S. HTC started this trend with the Desire S and Incredible S, and Sony Ericsson continued the trend with the Xperia Arc S, and now Samsung is following on their footsteps.

The Focus S is among the slimmest WP7/WP7.5 Mango based phone around, with a slim waistline of 8.55mm.

The Focus S is powered by a 1.4GHz Qualcomm Snapdragon (MSM8255T) processor and an Adreno 205 GPU, and packs 512MB of RAM. The original Super-AMOLED screen on the Focus has also been upgraded to a 4.3-inch Super-AMOLED Plus screen. The resolution of the camera at the back of the phone has been bumped to 8MP, and there is a 1.3MP camera in the front as well.

The press release from AT&T also states that the Focus S will be capable of 4G speeds, but does not mention anything whether it’s the so-called 4G (HSDPA+) network, or the real’ upcoming 4G LTE network from AT&T.

The Focus S will hit the States under the AT&T’s network, sometime in fall.

Rajesh is a 19 year old nerd, currently pursuing B.Com Hons from Bhawanipore college in Kolkata, India. He loves everything tech, especially Android. You can follow him on twitter @ePandu or mail to him at rajesh@techie-buzz.com.